baber/WOPTO huggingface dataset:
Patent GB-1174701-A (GB)
Title: Electrical Control for Variable-Ratio Power Transmission Mechanisms
IPC: F16H61/02
Filed: 1968-05-09
Abstract: 1,174,701. Transistor circuits. GENERAL MOTORS CORP. 9 May, 1968 [30 June, 1967], No. 21995/68. Heading H3T. [Also in Divisions F2, G1 and G3] A comparator gate, Fig. 4, in a motor vehicle automatic gear control comprises a transistor 258 having its emitter connected to a throttle pedal position responsive voltage line 142 whilst its base is connected through a potential divider 252 to a vehicle speed responsive voltage line 146. The collector of the transistor 258 is connected through a resistor 260 to the base of a switching transistor 262 which when rendered conductive connects an input line 162 to an output line 250. When the base voltage of the transistor 258 exceeds its emitter voltage the transistor becomes conductive and triggers the transistor 262. A feedback circuit comprising a diode 266 and resistor 268 serves to bias the base of transistor 258 when the transistor 262 begins to conduct, thereby providing a snap action switching function and also a hysteresis in the switching function. The ratios between the speed and the throttle voltages at which the transistor 258 begins to conduct is dependent upon the potential divider 252. The throttle responsive voltage 142 may be replaced by a reference voltage 150 which varies with temperature. The reference voltage is taken from the centre tap of a potential divider 500, Fig. 7, through a transistor 504 whose characteristic varies with temperature. The temperature variation of the transistor 504 compensates for temperature variation of the comparator gate transistor 258. Throttle voltage control circuit.-In Fig. 5 a constant current generator transistor 306 supplies current through a potentiometer 128 and resistor 312 to ground. The potentiometer 128 is operated by throttle pedal position. The voltage on a line 302 thus has a value proportional to throttle pedal position plus a minimum voltage established by the resistor 312. The voltage in line 302 is applied through a diode 314 and a power amplifier including transistors 316, 318 to an output 142. A potential divider 320, 322 supplies a voltage through a diode 324 which is. equal to the voltage passed through the diode 314 at closed throttle and thus provides a minimum voltage on line 142 in the event of failure of the throttle circuit. A throttle augmenting voltage 200 may be applied through a resistor 326 and the diode 324 to the amplifier circuit to produce increase voltage on the line 142. A broken wire or other open circuit in the lines 302, 304 triggers a transistor switch. ing circuit 330, 328 to short line 302 to ground. The characteristic of the diode 314 varies with temperature to provide temperature variation of the throttle voltage 142 to compensate for temperature variation of the comparator gate transistor 258.
Patent GB-731448-A (GB)
Title: Monoazo dyestuffs and process for their manufacture
IPC: C09B29/08
Filed: 1952-09-02
Abstract: The invention comprises dyestuffs of formula <FORM:0731448/IV (c)/1> where X is H, Br, an alkyl or a SO2-alkyl group, Y is H or an alkyl group and Z is an alkyl or hydroxyalkyl group.  They are made by coupling, preferably under acidic conditions, the appropriate nitrobenzene amine with the required tertiary amine. Specified nitrobenzene amines are 1 - amino - 2,6 - dibromo -, -2-bromo - 6 - chloro -, - 2 - bromo - 6 - alkylsulphonyl -, - 2 - bromo - 6 - alkyl - (e.g. methyl)- and -2-bromo-4-nitrobenzenes. Specified tertiary amines are N-methyl-, N-ethyl- and N-hydroxy-ethyl, -propyl and -butyl, -N-cyanoethylaminobenzene, N-methyl-, N-ethyl- and N-hydroxyethyl-N-cyanomethylaminobenzene, 1 - (N - methyl - N - cyanoethyl)-, 1 - (N - ethyl - N-cyanoethyl and 1-(N-hydroxyethyl-N-cyanoethyl)-amino-3-methylbenzene. Acetate rayon, polyamide or polyester fibres are dyed in yellowish brown to red shades.  Examples describe the use of some of the components specified above in the preparation of dyestuffs which are used to dye acetate rayon.
Patent GB-842925-A (GB)
Title: Orally-effective antidiabetic compounds
IPC: C07C279/26
Filed: 1958-07-09
Abstract: The invention comprises anti-diabetic salts of blood-sugar lowering sulphonyl ureas with biguanides of the formula: <FORM:0842925/IV(b)/1> wherein R is hydrogen or methyl, and their preparation by treating the sulphonyl urea with the biguanide, preferably in an aqueous or alcoholic medium.  The biguanide is suitably reacted in the form of its hydrochloride, in which case the reaction is carried out in the presence of an alkali-metal hydroxide, e.g. sodium hydroxide, or the sulphonyl urea is used in the form of an alkali-metal or alkaline earth metal salt.  Specified salts include the N1-dimethyl-biguanide salts of N1-sulphanilyl-N2-butyl-, N1-p-toluenesulphonyl-N2-butyl-, N1-(4-methyl -3-amino-benzenesulphonyl)-N2-butyl (and N2-cyclohexyl) and N1-p-chlorobenzenesulphonyl-N2-3-methoxypropyl-, urea. Specifications 792,776 794,552, 795,606, 797,474, 819,447 and 831,043 are referred to.
Patent GB-625554-A (GB)
Title: Improvements in struts for showcards, calendars, and photograph mounts
IPC: A47G1/14
Filed: 1947-08-08
Abstract: 625,554. Struts for showcards. SPICERS, Ltd., and IRONS, F. C. Aug. 8, 1947, No. 22135 [Class 52 (iii)] A strut 2 consists of a cardboard strip bent into triangular form the limb 8 being flanged at its upper edge to engage the offset edge 12 of the limb 7, which is secured to the card 1 to be displayed, a tongue 9 on the limb 7 passing through a slot 14 in the flanged edge of the limb 8 to retain the latter and permit upward displacement when the strut is collapsed against the back of the card.
Patent GB-445263-A (GB)
Title: Manufacture of trichloromethyloxyaryl carbinols and of oxy-acids and oxy-aldehydes therefrom
IPC: C07C45/29
Filed: 1934-07-30
Abstract: Trichloromethyloxyarylcarbinols, oxyarylglycollic acids and aromatic oxyaldehydes are manufactured by condensing an oxyaryl compound with chloral or chloral hydrate at a raised temperature in the presence of an alkaline reacting salt of a non-volatile acid or an alkali salt of a phenol or phenol derivative, and, if desired, subjecting the product to saponification, or to saponification and oxidation simultaneously or successively.  The saponification is advantageously conducted in the presence of an agent which binds hydrogen chloride, e.g. calcium carbonate, whilst the oxidation may be effected by means of oxygen or gases containing oxygen, if desired in the presence of a small proportion of a heavy metal compound capable of undergoing reduction, e.g. a cupric compound, and if desired under pressure. In examples: (1) phenol and chloral hydrate are melted together with the addition of anhydrous secondary sodium phosphate, to produce trichloromethyl-4-oxyphenylcarbinol, which is boiled with water to yield 4-oxyphenylglycollic acid; (2) p-cresol and chloral are melted together with anhydrous tertiary sodium phosphate, to produce trichloromethyl-3-oxy-6-methylphenylcarbinol; (3) molten chloral hydrate is added to a mixture of molten guaiacol and anhydrous sodium guaiacolate, and the product is boiled with water with the addition of prepared chalk and, if desired, copper sulphate, while passing air through the mixture, yielding vanillin; (4) pyrocatechol and chloral are reacted at 70--75 DEG  C. in the presence of anhydrous molten borax, producing trichloromethyl-3 : 4-dioxyphenylcarbinol; (5) chloral is added to a mixture of o-chlorophenol and anhydrous sodium o-chlorophenolate, yielding trichloromethyl - 3 - chloro - 4- oxyphenylcarbinol.  The potassium salts corresponding to the sodium salts used in (1), (2) and (4) are also specified as condensing agents.  Specifications 219,676, [Class 2 (iii)], and 344,675 are referred to.  The Specification as open to inspection under Sect. 91 comprises also the reaction of halogen substitution products of phenols with chloral or chloral hydrate in the cold in the presence of anhydrous potassium carbonate.  In examples: (a) o-chlorophenol yields trichloromethyl - 3 - chloro - 4 - oxyphenylcarbinol which is saponified with caustic soda and oxidized by adding cupric chloride and passing in oxygen under pressure, producing 3-chloro-4-oxybenzaldehyde; (b) p-chlorophenol is similarly converted to 5 - chloro - 2 - oxybenzaldehyde.  Reference is also made to the oxidation of the product of (1) above to 4-oxybenzaldehyde, the saponification and oxidation of the product of (2) to 5-oxy-2-methylbenzaldehyde, and the saponification and oxidation of the product of (4) to protocatechuic aldehyde. Naphthols are additionally referred to as starting materials. This subject-matter does not appear in the Specification as accepted.
Patent GB-628567-A (GB)
Title: Improvements in or relating to resistances having a negative temperature coefficient
IPC: H01C7/04
Filed: 1946-07-26
Abstract: 628,567. Casings, enclosures and mountings for resistances ; non-metal resistances temperature variable resistances. PHILIPS LAMPS, Ltd. July 26, 1946, No. 22323. Convention date, July 30, 1945. [Class 37] A resistor which has a negative temperature coefficient and comprises a resistive body of substantially cylindrical shape housed in a tube of insulating material and connected by filiform conductors to terminals at the ends of the tube is characterized in that the resistive body is supported inside the tube by spacers which have a small area of contact either with the resistive body or with the inner wall of the tube. As shown a ceramic tube 1 is formed with three ribs which embrace a rod-shaped resistance element 5 supported axially by helical springs 9 bearing against end caps 3. The wire of the helical springs 9 is of the nature of a thread and the ribs 7 blade-shaped, Fig. 2. The ribs 7 may alternatively be formed on the rod resistance 5. In a modification, Figs. 3 and 4 (not shown), the ribs 7 are omitted and the resistance 5 is supported instead by triangular plates which make a three-point contact with the inner wall of the tube 1. The resistance 5 may be a mixture of manganese oxide and titanium oxide. The invention is directed particularly to radio resistances.
Patent GB-1326483-A (GB)
Title: Electronic apparatus for analysis of a beam of light
IPC: G01R15/24
Filed: 1971-04-19
Abstract: 1326483 Measuring light modulation BROWN BOVERI & CO Ltd 19 April 1971 [25 Feb 1970] 22326/71 Heading G1A In an apparatus for measuring the modulation of a light beam two mutually phase-displaced electrical signals are derived therefrom and, after processing by circuitry which includes a filter (13, 14) for each signal and a II phase-shifter (15) for one of them, are added in an adding network (16) whose phase-modulated output is indicative of the original beam modulation. The magnetic field variation produced by an electric current in a line is determined by measuring the polarization-modulation of a laser beam passing through a magneto-optical element 7 placed in the magnetic field. The laser beam is first chopped by a rotating diaphragm or pulsed Kerr or pockels cell 5, and is then divided at 6 to give a reference and measuring beam. After passage through the element 7, e. g. a block of flint glass or a YIG crystal, the measuring beam is again divided and the components pass through polarizers 9, 10. These have their principal planes at <SP>II</SP> 4  to one another, to produce correspondingly phase-displaced outputs from photodiodes 1, 2. These two outputs are combined separately (11, 12) with the output from reference photo-diode 3, Fig. 2 (not shown). The filtering, phase displacement of one signal, and addition of signals then takes place.
Patent GB-714659-A (GB)
Title: Improvements in the production of carboxylic acid esters
IPC: B01J31/22
Filed: 1952-09-05
Abstract: Carboxylic acid esters are produced by the interaction of olefinic hydrocarbons with carbon monoxide and aliphatic alcohols in a liquid medium in which is dissolved as catalyst a complex cobalt or nickel cyanide of the general formula [NX4]2[Me(CN)4] in which Me is cobalt or nickel and in which at least one, preferably three, of the four X's stands for an alkyl radical, the other(s) being hydrogen, or in the presence of a cobalt or nickel carbonyl in combination with alkali metal or ammonium cyanides.  Suitable catalysts are, for example, triethyl ammonium nickel cyanide, trimethyl butyl ammonium nickel cyanide, tetraethyl ammonium nickel cyanide, triethyl butyl ammonium nickel cyanide and the corresponding cobalt cyanides.  A mixture of the components of the complex cyanides may be used, e.g. a mixture of triethyl amine or any other trialkyl amine, hydrogen cyanide and nickel carbonyl which will form triethyl ammonium nickel cyanide.  Suitable carbonyls for use in combination with the alkali metal or ammonium cyanide are for example, nickel carbonyl and triaryl phosphine substituted nickel carbonyls.  Best results are obtained with catalysts in which the ratio between the numbers of cobalt or nickel ions and of the cyanide anions is at least 1 : 4. Preferred temperatures are between 80 DEG  and 200 DEG  C. and pressures above 50 atmospheres are used.  The preferred olefin is ethylene used in an amount equal in volume to that of the carbon monoxide.  In the examples: (a) a mixture of methanol, nickel carbonyl, potassium cyanide and water is treated with a mixture of ethylene and carbon monoxide to give mainly methyl propionate with some propionyl propionic acid methyl ester, diketo-pelargonic acid methyl ester, esters of higher polyketo-carboxylic acids and diethyl ketone; (b) a solution of nickel carbonyl and potassium cyanide in methyl propionate, methanol and water are treated with ethylene and carbon monoxide to give additional methyl propionate, propionyl propionic acid methyl ester, esters of higher polyketocarboxylic acids and a small amount of diethyl ketone; (c) potassium cyanide and nickel carbonate are dissolved in ethanol and water and the solution is treated with ethylene and carbon monoxide to give ethyl propionate, propionyl propionic acid ethyl ester and esters of higher polyketo-carboxylic acids; (d) a mixture of di-(triethyl-ammonium) nickel tetracyanide, [(C2H5)3NH]2.Ni(CN)4, methanol and water is treated with ethylene and carbon monoxide to give methyl propionate, propionyl propionic acid methyl ester, diketopelargonic acid methyl ester and esters of higher polyketo-carboxylic acids.
Patent GB-282000-A (GB)
Title: Improvements in throttle lever for rock drills
IPC: B25D9/16
Filed: 1927-08-25
Abstract: 282,000. Ingersoll-Rand Go., (Assignees of Wilhelm, R. H.). Dec. 11, 1926, [Convention date]. Percussive tools.-In order to protect the operator's hand, the throttle-operating lever S has a guard piece X with rounded lower edges W and flat under surfaces Y. A swell Z on the lever is arranged close to the pivot of the intermediate lever c, so as to obtain a minimum movement of the lever S.
Patent GB-277490-A (GB)
Title: Improvements in pivoting-adjustments for the wind and weather screens of motor-driven road vehicles
IPC: B60J1/00
Filed: 1926-09-11
Abstract: 277,490. Weldings, Ltd., Donald, J. M., and Linforth, A. R. Sept. 11, 1926. Pivoting - adjustments. - Screens for road vehicles are secured in an adjusted position by a sleeve e supporting the screen and an outer fixed sleeve c, these members having toothed collars g, d respectively, one of which is movable into engagement with the other by the action of a cam i<3> against a compression spring j. The cam is mounted upon the inner sleeve c and abuts against a collar h, rigid with this sleeve, and it is formed with a handle i which, when moved rotatably, works against a cam surface formed on the end of the fixed sleeve c. By a rotarv movement of the handle i the sleeve e carrying the screen is slidable by or against the action of the spring j to release or engage the toothed collars g, d. The cam lever is held in either of its two positions by a peg i<4> engaging the spring-clip ends of a band spring l which encircles the outer fixed sleeve c. The sleeve c is carried by a fixed upright pillar f. In modified constructions, the tube may revolve in two fixed end sleeves, and the spring j may effect engagement of the parts and the cam serve to hold them in the released position. Specification 268,999, [Class 103 (ii), Rail and road vehicles, Details applicable &c. to], is referred to.
Patent GB-1139174-A (GB)
Title: Pipeline tapping valve
IPC: F16L41/12
Filed: 1966-05-20
Abstract: 1,139,174. Tapping sleeves; valves. J. TUGWELL. 20 April, 1967 [20 May, 1966], 22553/66. Headings F2G and F2V. A pipeline tapping valve comprises a housing 1 adapted to be attached against the perpihery of a pipe 6, for example by a clamp 7, 8, having a passage 5 closable by a valve element 11, 12, and a tubular plug 14 extending through the wall of the housing perpendicular to the axis of the passage 5 into a chamber 2 containing the valve element, the plug 14 being rotatable to lift the valve element off its seating, for example by means of a segmental shoulder 15, and permit flow from the pipe 6, through the passage 5, and out through a passage in itself. A flange 19 on the plug 14 locates behind a screw 18 in the flow position to prevent the plug being withdrawn.
Patent GB-1405258-A (GB)
Title: Drawbars
IPC: B60D1/54
Filed: 1972-05-13
Abstract: 1405258 Drawbars A R EDWARDS 15 Feb 1973 [13 May 1972] 22565/72 Heading B7T A drawbar for connecting a heavy attachment such as a roller to a towing hitch on a tractor or on another attachment, comprises a box-like first member 10 adapted to be fixed at end 11 to the attachment and a second member 21 mounted in (as shown) or on the first member to occupy either a connecting position, as in Fig. 3, in which limited relative lateral movement between the members 10 and 21 is possible, or a towing position in which the members 10 and 21 engage one another to prevent the relative lateral movement. The members 10 and 21 may be locked in the towing position by a pivotal locking member 15, the member 21 having an end 23 which projects from the member 10 and carries a hitching eye 24. A wider part 22 of member 21 carries a plate 25 which projects through openings 13 in the side walls of member 10. The projecting ends of the plate 25 are engaged by lugs 18 of the locking member 15 when the end 23 of member 21 is pulled through an open end 12 of member 10 to the towing position, Fig. 4 (not shown). The locking member may be held down with its cross member 17 in contact with the top of member 10 by passing a bolt or pin through a shackle (20) which projects upwardly from the member 10 through a slot (19) in member 17, Fig. 1 (not shown).
Patent GB-779850-A (GB)
Title: Process for the preparation of catalytic cracking feed stocks
IPC: C10G21/00
Filed: 1955-08-05
Abstract: <PICT:0779850/III/1> A catalytic cracking feed stock is prepared by extracting a cycle oil or a mixture comprising cycle oil with the extract phase from a lubricating oil extraction process and collecting the raffinate as the cracking feed stock.  Cycle oil constituents, boiling above 430 DEG F., of the product of a catalytic cracking operation in a zone 1 are separated from lower boiling constituents in a fractionator 4 and sent by a line 11 to a tower 17, where they are extracted with the solvent-containing extract phase from a lubricating oil extraction in a tower 12.  A lubricating oil fraction is fed by a line 13 and passes upwardly, countercurrent to a downward flow of a solvent, such as phenol, introduced by a line 14, the extract phase, composed of solvent and aromatic constituents from the lubricating oil, passing by a line 16 to tower 17, while a raffinate comprising refined lubricating oil is removed by a line 15. Other solvents which may be used are furfural, nitrobenzene, aniline and cresol.  The cycle oil stream of line 11 passes upwardly, counter-current to the extract stream from line 16, the single ring aromatic hydrocarbons, which are suitable for catalytic cracking, being transferred from the extract phase to the cycle oil, while condensed ring aromatic hydrocarbons, which are objectionable in catalytic cracking feed, are removed from the cycle oil.  The extracted cycle oil is removed by a line 19 to a fractionator 22, where phenol is removed, and fed by a line 24 to the cracking zone 1. In a modification the cycle oil is mixed with a gas oil boiling above 430 DEG F., and the mixture is extracted with the lubricating oil extract stream as before, by which means metal contaminants, comprising organic compounds of nickel, vanadium and iron, contained in the gas oil are removed in the extract phase, and a treated feed of mixed cycle oil and gas oil is provided for catalytic cracking. In a further modification the extract phase from the extraction of the lubricating oil is first used to extract the cycle oil, and then is used to extract the gas oil, the raffinates being combined to form a catalytic cracking feed.
Patent GB-924513-A (GB)
Title: Acid esters of polyglycol amine compounds
IPC: D06P1/607
Filed: 1960-06-29
Abstract: A polyglycol <FORM:0924513/IV(a)/1> in which R1 and R2 are aliphatic hydrocarbon residues, R1 containing at least 12, R2 at least 11 C. atoms; m and n are whole numbers their sum being 9 to 101, is esterified with sulphuric or orthophosphoric acid or their reactive derivatives (defined) to form an acid ester, which, if desired, is converted into a water-soluble salt.  The polyglycols are prepared by acylating a propylene diamine with a fatty acid and reacting the product, in the presence of a catalyst but exclusion of oxygen, with ethylene oxide in a molecular proportion of 8 to 100 moles of oxide to 1 mole of acyl compound.  Alternatively, polyglycol ether halides can be reacted with the acyl compounds. For esterification it is preferred to use sulphonic acid or urea phosphate, urea being present in either case, the ammonium salt of the acid ester being obtained. Chlorsulphonic acid when used gives the acid ester.  Examples of suitable propylene diamines and acylating agents are given.ALSO:A polyglycol <FORM:0924513/IV(a)/1> in which R1 and R2 are aliphatic hydrocarbon residues, R1 containing at least 12 and R2 at least 11 C. atoms; m and n are whole numbers, their sum being 9 to 101, is esterified with sulphuric or orthophosphoric acid or their reactive derivatives (defined) to form an acid ester, which, if desired, is converted into a water-soluble salt.  The polyglycols are prepared by acylating a propylene diamine with a fatty acid and reacting the product, in the presence of a catalyst but exclusion of oxygen, with ethylene oxide in a molecular proportion of 8 to 100 moles of oxide to 1 mole of acyl compound. Alternatively, polyglycol ether halide can be reacted with the acyl compounds.  For esterification it is preferred to use sulphuric acid or urea phosphate, urea being present in either case, the ammonium salt of the acid ester being obtained. Chlorsulphonic acid when used gives the acid ester.  Examples of suitable propylene diamines and acylating agents are given.ALSO:Mixtures of fibres of polyester and wool dyed in the two-bath method are first treated with a dispersion dyestuff to dye the polyester, then treated with an aqueous solution containing an acid ester or its salt obtained by reacting sulphuric acid, orthophosphoric acid or their reactive derivatives (defined) with a polyglycol <FORM:0924513/IV(a)/1> (see Group IV(a)) which cleans the wool dirtied with the dispersion dye.  Wool, silk and synthetic polyamides alone may also be dyed in the presence of such esters using complex chromium or cobalt compounds of monazo dyes.  The esters have a levelling action and, can also reverse the dyeing process (when used in major amounts) causing the dye to migrate from the dyed fibre, so that the equilibrium between the dye fixed on the fibre and that dissolved in the dyebath is considerably shifted.